Finding the Fourth Proportional to 22,265.72, 30,730.15 and 12,705.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,265.72 : 30,730.15 = 12,705.58 : x
2. Step 2: Convert to fraction form
   22,265.72/30,730.15 = 12,705.58/x
3. Step 3: Cross multiply
   22,265.72x = 30,730.15 × 12,705.58
4. Step 4: Simplify right side
   22,265.72x = 390,444,379.24
5. Step 5: Solve for x
   x = 390,444,379.24/22,265.72
6. Step 6: Final answer
   x = 17,535.67